We chose 40 deg since we do not turn on floor heating in the IBA. More heat is captured when
doors close at 40 (at least that is what we have found). We have signs that say the IBA is always open and
doors open automatically so customers seem to understand the operation. Only one customer said something to me as she has claustrophobia (our exit
door is normally open during the wash unless the temp control says otherwise). After learning how the emergency release pulley works for the airlift
doors she was fine.